Stump-pulling apparatus.



W. C. F. ZIMMERIVIAN, JII. & H. L. ZIMMERMAN.

STUNIP PULLING APPARATUS.

APPLICATION FILED ocr. 24. Ism.

Patented Oct. 1, 1918.

IIIIIIII Z7, if

Ig I

v I. I 1 Il ...r a lv w i l Il Il .I

me mmms pneus ce.. Puomumo., wns'mw nm. n cv `vviiLLIAixr c. r. ZIMMERMAN, Jia., ANI)` HENRY L'ZIMMERMAN, or LONE TREE, Iowa.

STUMP-PULLING APPARATUS.

To all 'wkomz't may concern.' y

Be it known that we, WILLIAM C. F. ZIM- MERMAN, J r., and HENRY L. ZIMMERMAN, citizens of the United States, residing'at Lone Tree, in the county of Johnson and vState of Iowa, have invented certain new and useful Improvements in Stump-Pulling Apparatus; and we do hereby declare the `following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap` pertains to make and use the same. y y

Y This invention relates to improvements in stump pulling apparatus, and more particularly to the cable windingdrum, its frame and attachments.

An object in view is the provision of simple and y efiicient means for quickly and easily'connecting and disconnecting a sweepactuated shaft with a drum. l l

A further object is the provision of means for sustaining a drum ratchet-engaging pawl eitherin or out of operative position. Vith these and further objects inv view, as will in part'be hereinafter stated and in part become apparent, the invention comprises certain novel constructions, combinations and arrangements of parts a'swill be hereinafter specified and claimed.

y In the accompanying draw1ng,

` Figure 1`is a view in side elevation of an apparatus embodying 'the `features ofthe' present invention. y

l Fig. 2 is a` longitudinal, Vertical, central section therethrough.

Fig.` 3 is a fragmentary top plan, partsV being seen in horizontal section, the section being taken on'the plane indica-ted byline Fig. 4is a vdetail perspective view ofthe 'mani'iallyv actuated spindle and one Iof the pawls which cooperates therewith detached.

for clearnessof disclosure. y

Fig. 5 isa `detail perspective View of the pawldetached. y 4

' Figs. 6 and 7 are fragmentary, detail, vertical sectional views showing the pawl in elevation, respectively, in its engaging and disengaged positions. 50 i the plane offline 7-7 of Fig. 2.

Fig. 8 is a fragmentary section4 taken on Fig. 9 is a detail side elevation of the acltuating and locking means for the clutch.

Referring to the drawing by numerals, 1

vindicates an ordinary stump puller drum frame having'the'hook 24f`o'r engaging an l Specication of Letters Patent.

Application filed October 24, 1914. Serial No. 868,472.

rat-enten' omi, raie?.

anchoring cable. The upperportion of the frame is formed with an annular opening 3 'and the lower portion of the frame is formed with an axially alined annular opening 4. A cylinder 5 is snugly fittedwithin the opening 3 and is provided with a finger 6 underhanging the under face of the upper portion of the frame 1, the linger being introduced Vthrough a radial notch 7 formed in the upper portion of frame 1 and opening into the area 3. Though the finger 6 travels and,

therefore, comes into register with notch 7 once in every revolution'of cylinder 5 the time of perfect registration is only instantaneous, and at all other times the linger aiords a means of preventing the cylinder 5 from rising in the frame. A tubular shaft 8 depends from cylinder `5 and extends downwardly through the aperture 4 in the lower portion of the frame, finding bearing therein. A hollow drinn 9 surrounds the shaft 8 and is formed with a rectangular aperture Yin which fits the squared portion 10 of shaft 8. The upper end of the drinn is provided with a flange whose outer edge isforrned into a ratchet" 11 and the lower end of the drum is provided with a flange 12 which flares downward so as t0 be constantly clear of the cable beingreefed `in or paid out,

and also providing a' clearance between in `ner portions of the flange and adjacent poi` tions of frame 1- soto accommodate the inner enlarged end of a cablefsecured in the Aeyelet 13 formed in the flange, and at the saine time permit the drum to be moved laterally into and out of theframe without interference of such cableend withthe frame when that portion ofthe ange is moved through the' frame. The end of the cable is` also thus prevented from presenting a' protuberance' liable to strike part of a crate or casing in which the machine may be shipped or stored.

The cylinder 5 is hollow and its inner surfface is formed with a series of abrupt shoul ranged a tubular depending shaft which is nested within shaft 8 and arrangedpcon- `5,`the shaft 8 is formed with radial ears 19,

19, one for each pawl 15, and the pawls are sustained pivotally by pintles 20 engaging said ears attheir lower ends and the bottom of box 16 at their upper ends. Shaft 18 is provided with radial, axially extended anges or beads 21, one such flange being provided for each pawl 15, and each flange being formed with a longitudinal groove in its side face, which groove is transversely arcuate or curved to correspond with the rounded portion of the end of the respective engaging pawl 15 whereby the twisting or rotary stress is delivered from shaft 18 through the flanges, rather than through pintles 20 to pawls 15, as will hereinafter more clearly appear. Each pawl 15 is formed with a substantially radially inwardly extending finger 22 which projects through an aperture 23 in the shaft 18, each aperture 23 being enlarged inwardly for accommodating a swinging movement of the finger 22 on the pintle 2O as an axis. A cylindrical spindle 24 extends into and snugly fits the upper end portion of shaft 18 and projects upwardly through the bottom of box 16, the upper end of the spindle being formed withv a disk or head 25. The spindle 24 is formed with longitudinal grooves 26 into which the lingers 22 extend, each groove being transversely curved and describing the greater part of a circle, as best seen in Fig. 3, so that the respective engaged finger is free to have the required movement when the spindle is rotated. The bottom of box 16 has its intermediate portion depressed, and forming an annular portion 16 of the same diameter and axially alined with cylinder 5, as clearly seen in Fig. 1. This depressionis suiiicient for causing the upper surface -of disk 25 to lie below the main portion of the bottom of box 16 so that the sweep which in operation rests within the box 16 does not rest upon disk 25. `Spindle'24 is formed at its upper end with an aperture 27 which is engaged by an operating bar 28 forming a lever or handle for rotating the spindle 24 and extending through a slot 29 formed in the annular port-ion 16. Thus, in operation, when the lever 28 is swung in one direction the spindle 24 will beyrotated for swinging the fingers 22 in a direction for drawing in the pawls 15 to the position indicated in full linesV in Fig. 3, whereupon the drum 9, shaft 8, and cylinder 5 will be free to revolve independently of the box 16 and its connected parts, as when vcable is being paid out from the drum.

When it is desired for the drum to be rotated by the sweep engaging box 16, lever 28 Laagste i- 4, .,E .i s.. u ,'Kl x" 1s swung to its other extreme which rotates spindle 244 and shifts the `fingers 22 and thereby swings pawls 15 outwardly to the position indicated in dotted lines in Fig. 3 with the free ends of the pawls engaging the internal. ratchet of cylinder 5, whereupon rotation of box 16 will impart similar movement to cylinder 5 and drum 9.

To prevent reverse rotation ofdrum 9 while its cable is under tension, a pawl 30 is'disposed to engage ratchet 11, the pawl being pivotally mounted between ears 31 upstanding from the upper portionof frame-1 at opposite sidesof a notch 32 formed in said portion of the frame, the pawl being rand its shank' extending alongside the pawl and adapted to engage either an aperture 34 or an aperture 35. A spring 36 surrounds the body of the bolt at oneside of pawl 30 and is tensioned to press the bolt in a direction for causing the shank to remain in either of the given positions with ythe short end portion in aperture 34 or in aperture 35. When the pawl is to operate normally, the

shank of the bolt is disposed withits short end portion in aperture 34, and the pawl is then free to swing to the position indicated in Fig. 6, but when is desired to allow'the drum 9 to revolve freely thebolt is adjusted to the position indicated in Fig. 7 where the short end engages the aperture 35, and, in this position, the bolt rests against the contiguous edge of framel and supports the pawl clear of ratchet 11. f

In operation, the hook2 is anchored and the cable which is woundabout drinn `9 is connected to thestump to be extracted. The box` 16 is revolved by Ya draft animal actuated sweep or other appropriate means, the pawls 15 havingpreviously been adjusted to position for en agement with the internal ratchet of cy inder 5, whereby .l the cylinder is revolved and the drumV `9 llikewise revolved so that the cable is halllgd` in, the pawl 30 serving to preventreturn rotation in the event the stress on the boxl `is temporarily relaxed. This operation is continued until the stump is extracted, and then the pawl 30 nis lifted and the bolt 33 adjusted to the position indicated in Fig. 7. The cable is then detached from the extracted stump, moved to another stump and the operation repeated. V-In the course of moving the cable to a second stump, to avoid connected parts, the lever 28 is moved for retracting pawls 15, and the drum 9` is thus left free for rotation.

To avoid accidental movement of pawls l5, particularly when the parts are out of gear, the pawls are designed to be locked in their respective clutched and unclutched positions by locking the lever 28 in either of the extremes of its movement, as by any appropriate detent such as a spring pressed bolt 28 carried by lever 28 and positioned to engage apertures 28 in box 16.

1. In stump pulling apparatus, the combination, with a frame, of a cylinder journaled therein and having an internal ratchet, a sweep support having a shaft extending into the ratchet, a spindle extending within the shaft of the sweep support, a pawl carried by the shaft and having a finger engaging the spindle and adapted to be swung when the spindle is oscillated for swinging the pawl into and out of engagement with the ratchet, and a drum connected to be actuated by the cylinder.

2. In stump pulling apparatus, the combination, with a frame, of a cylinder journaled therein and having an internal ratchet, a sweep support having a` shaft extending into the ratchet, a spindle in the shaft, said spindle being formed with a groove, a pawl within the cylinder and pivotally engaging the shaft and having a finger extending through the wall of the shaft and into the groove of the spindle for enabling shifting of the pawl to and from engagement with the ratchet by rotary movement of the spindle, and a drum actuated by the cylinder,

3. In stump pulling apparatus, the combination, with a frame, vof a cylinder journaled therein, and having an internal ratchet, a sweep support having a shaft extending into the ratchet, a spindle in the shaft, said spindle being formed with a groove, a pawl within the cylinder and pivotally engaging the shaft, and having a nger extending through the wall of the shaft and into the groove of the spindle for enabling shifting of the pawl to and from engageinent with the ratchet by rotary movenient of the spindle, a flange on the shaft disposed to receive the end thrust of the pawl, and a drum actuated by the cylinder.

4. In stump pulling apparatus, the combination, with a frame, of a cylinder journaled therein and having an internal ratchet, a sweep support having a shaft eX- tending into the ratchet, a spindle in the shaft, `said spindle being formed with a groove, a pawl within the cylinder and pivotally engaging the shaft and havinga Enger extending through the wall of the shaft and into the groove of the spindle for enabling shifting of the pawl to and from engagement with the ratchet by rotary Inove- Inent of the spindle, a flange on the shaft disposed to receive the end thrust of the pawl, the edge of the pawl contacting with the flange being transversely rounded and the iiange being correspondingly concaved, and a drum actuated by the cylinder.

In testimony whereof we affix our signatures in presence of two witnesses.

WILLIAM C. F. ZIMMERMAN, JR. HENRI' L. ZIltlllIERlllAN.`

Witnesses:

H. C. BUELL, Ancnns BUTLER,

Uopies of this patent may be obtained for five vcents each, by addressing the Gommissioner of Patents,

, Washington, D. C. 

